Perhaps you should try some spelling variations:
truong dao » truong dai, truong cao, truong bo
nhung cong » dung cong, thong cong, hang cong
chi sach » chinh sach, chieu sach, co sach
luong va » dung va
van toan » van tuan, van thanh, manh toan
doi chi » doi khi
van tan » van tuan, van ban, van tai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - thanh ((luong va) or (truong dao)) nhung cong ((van toan) or (van tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - thanh ((luong va) OR (truong dao)) nhung cong ((van toan) OR (van tan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - thanh ((luong va) or (truong dao)) nhung cong ((van toan) or (van tan)) cau*.